> We’d have to end pretty much all those programs to run a minuscule basic income

Isn't ending all those programs one of the core ideas of universal basic income? Instead of having a huge bureaucracy administering targeted social welfare you cut all the overhead and just pay everyone enough to exist, regardless of whether you actually need it. It'd still be more expensive, but giving people something dependable to fall back on would hopefully increase innovation and entrepreneurship, offsetting some of the costs